<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>图书修改</title>
</head>
<body>
  <h2>修改图书</h2>

  <div id="form"></div>
  
  <button id="btn">提交</button>

</body>
</html>